Lodash remove duplicates from array

Question

This is my data:

[
    {
        url: \'www.example.com/hello\',
        id: \"22\"    
    },
    {
        u         


        

Answer 1

With lodash version 4+, you would remove duplicate objects either by specific property or by the entire object like so:

var users = [
  {id:1,name:'ted'},
  {id:1,name:'ted'},
  {id:1,name:'bob'},
  {id:3,name:'sara'}
];
var uniqueUsersByID = _.uniqBy(users,'id'); //removed if had duplicate id
var uniqueUsers = _.uniqWith(users, _.isEqual);//removed complete duplicates

Source:https://www.codegrepper.com/?search_term=Lodash+remove+duplicates+from+array

Answer 2

For a simple array, you have the union approach, but you can also use :

_.uniq([2, 1, 2]);

Answer 3

You can also use unionBy for 4.0.0 and later, as follows: let uniques = _.unionBy(data, 'id')

Answer 4

Simply use _.uniqBy(). It creates duplicate-free version of an array.

This is a new way and available from 4.0.0 version.

_.uniqBy(data, 'id');

or

_.uniqBy(data, obj => obj.id);

Answer 5

You could use lodash method _.uniqWith, it is available in the current version of lodash 4.17.2.

Example:

var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];

_.uniqWith(objects, _.isEqual);
// => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]

More info: https://lodash.com/docs/#uniqWith

Answer 6

Or simply Use union, for simple array.

_.union([1,2,3,3], [3,5])

// [1,2,3,5]